Athroscerosis is a growing bit of tissue, it needs its own blood vessels. Blood vessels will grow int ange genesis, will grow into the plark welga. And while this is happening in some blood vessels, it starts to weaken the actual wall of the blood vessel and i may start pouching out. This is what we call an aneurism, right? And then it can really weaken to the point it ill blow outside of the wall. If that breaks, thats a lot of blood you're losing very quickly.